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Privacy Policy

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Privacy Policy

Effective 15 October 2026. This policy explains what personal data Corgi Chess collects, why, who it is shared with, how long it is kept, and the rights you have over it.

Corgi Chess is a skill-based chess competition platform. Results are determined by the skill players demonstrate over the board, not by any random process.

1Who is responsible for your data

The controller of your personal data is [REGISTERED COMPANY NAME — TO BE CONFIRMED], registered at [REGISTERED ADDRESS — TO BE COMPLETED] (“we”, “us”). For any privacy question, or to exercise the rights described in section 10, contact us at [privacy@your-domain — TO BE COMPLETED].

This policy is published in English. Translations of the interface are provided for convenience; in the event of any conflict, the English version of this policy governs.

2Data we collect

We collect only what the service needs to run, settle competitions, and stay compliant.

CategoryDataSource
AccountUsername, email address, hashed password (bcrypt — we never store your password in readable form), account creation date, role.You, at sign-up
AuthenticationSession token stored in an httpOnly cookie. If you sign in with a third-party provider, the provider account identifier and tokens.You / identity provider
FinancialPlatform balance, full transaction ledger (deposits, entry fees, prize payouts, refunds, withdrawals, amounts, running balance, timestamps), linked blockchain wallet address, withdrawal destination addresses, and on-chain transaction hashes.You and the Polygon blockchain
CompetitionGames played, every move (in PGN/FEN form), results, clocks, ELO rating, tournament entries, seeds, final ranks, and prize distributions.Your gameplay
Integrity / anti-cheatPer-move timing measurements, in-flight move records, and automated suspicious-timing flags used to detect engine assistance.Generated by us
LocationCountry and, where available, first-level region (e.g. US state), derived from your IP address by our hosting provider's edge network and stored on your account.Derived from IP
ComplianceVerification tier, suspension status, and any deposit limits applied to your account.Generated by us / verification provider
Terms acceptanceEach time you accept the Terms of Service and this Privacy Policy: the version you accepted, your confirmation that you are 18 or older, the date and time, and the IP address and browser user agent the acceptance was sent from.You, at sign-up and when you accept an updated version
Technical & securityIP address (used transiently for rate limiting and abuse prevention, except for the IP address recorded with each Terms acceptance, described above), failed login counts per email address, and error diagnostics.Automatic
PreferencesLanguage choice (cookie) and light/dark theme (stored in your browser only).You

We do not collect or store your payment card details or your wallet’s private keys. We do not sell personal data, and we do not use it for third-party advertising.

3Why we use it, and our legal basis

PurposeLegal basis (UK/EU GDPR)
Creating and operating your account; running games and tournaments; crediting prizes.Performance of a contract
Maintaining the financial ledger and processing deposits and withdrawals.Performance of a contract; legal obligation
Anti-cheat, fraud prevention, rate limiting, and account-security monitoring.Legitimate interests (protecting fair competition and other players)
Jurisdiction screening and identity verification where required.Legal obligation; legitimate interests
Keeping financial and competition records for audit and regulatory purposes.Legal obligation
Recording your acceptance of the Terms of Service and this policy, and your confirmation that you are 18 or older, so we can show what was agreed and when.Legitimate interests (establishing, exercising, or defending legal claims)
Diagnosing errors and improving reliability and performance.Legitimate interests

4Blockchain data is public and permanent

Deposits and withdrawals settle in USDC on the Polygon network. Anything recorded on a public blockchain — including wallet addresses, amounts, and transaction hashes — is public, permanent, and outside our control. We cannot edit, delete, or anonymise it, and neither can you.

Because blockchain activity is publicly linkable, a wallet address you connect here may be associated with your other on-chain activity by third parties. Consider this before connecting a wallet you use elsewhere.

5Cookies and local storage

We use a deliberately small set of cookies, and none for advertising:

  • Session cookie — keeps you signed in. Strictly necessary; httpOnly, so it cannot be read by scripts in your browser.
  • Language cookie — remembers your chosen language for one year.
  • Theme — your light/dark preference, stored in your browser’s local storage and never sent to us.

Our analytics provider collects aggregate, privacy-preserving usage measurements (such as page views and performance timings) and does not use cross-site advertising cookies.

6Who we share data with

We share data only with service providers that process it on our instructions, under contract, for the purposes below. We do not sell personal data.

ProviderPurposeData involved
Hosting & analytics providerServing the application; aggregate usage metricsIP address, request metadata
Database providerStoring all application dataAll stored account, financial and competition data
Real-time messaging providerDelivering live moves, clocks and notificationsGame and user identifiers
Error-monitoring providerDiagnosing crashes and faultsError traces, which may include identifiers
Blockchain node providerReading and broadcasting Polygon transactionsWallet addresses, transaction data
Identity-verification providerVerifying identity where required (when enabled)Identity documents and verification result
Payment providerCard and fiat payment processing (when enabled)Payment details handled directly by the provider

We may also disclose data where legally required — to regulators, law enforcement, or in response to valid legal process — and to establish, exercise, or defend legal claims.

7International transfers

Our providers may process data outside your country, including in the United States and the European Economic Area. Where data leaves the UK/EEA, transfers are made under an adequacy decision or Standard Contractual Clauses with appropriate safeguards. You can request details of the safeguards that apply by contacting us.

8How long we keep it — and why deletion is limited

Financial and competition records are retained for as long as required by financial, audit, and anti-money-laundering obligations, and to resolve disputes — typically several years after your last activity, and longer where the law requires it.

This has an important consequence: we do not hard-delete accounts, transactions, games, or entries. When you ask us to erase your data, we anonymise the personal identifiers attached to your records (such as your username and email) while retaining the underlying financial and competition entries in a form that no longer identifies you.

Each record of your acceptance of the Terms of Service and this policy, including the IP address and browser user agent it was sent from, is kept as part of the compliance record for as long as the financial and competition records above. If you ask us to erase your data, we remove the IP address and user agent from these records and keep only the version accepted, your age confirmation, and the date and time.

Operational data with no long-term purpose — move timings, rate-limit counters, and failed login counters — is deleted automatically on a rolling basis, typically within hours.

9Automated decisions

Some decisions are made automatically: anti-cheat systems may flag play patterns consistent with engine assistance, and access to deposits, entries, or withdrawals may be restricted automatically based on your jurisdiction or verification status.

Where such a decision significantly affects you — for example suspending an account or blocking a withdrawal — you have the right to request human review, to express your point of view, and to contest the outcome. Contact us at [privacy@your-domain — TO BE COMPLETED].

10Your rights

Depending on where you live, you may have the right to: access a copy of your data; correct inaccurate data; request erasure; restrict or object to processing; receive your data in a portable format; and withdraw consent where processing relies on it. These rights are subject to the retention limits described in section 8.

If you are in California, you additionally have the right to know what personal information is collected, disclosed, or sold; to request deletion; to correct inaccurate information; and not to be discriminated against for exercising these rights. We do not sell or share personal information for cross-context behavioural advertising.

To exercise any right, email [privacy@your-domain — TO BE COMPLETED]. We will respond within the period required by applicable law (one month under the GDPR; 45 days under the CCPA) and may need to verify your identity first. If you believe we have handled your data improperly, you may complain to your local data protection authority.

11Security

Passwords are stored only as salted bcrypt hashes. Sessions use httpOnly cookies. Traffic is encrypted in transit, and access to production data is restricted. Balance changes are written atomically alongside an immutable ledger entry, so financial history cannot be silently altered.

No system is perfectly secure. Use a strong, unique password, and tell us immediately at [privacy@your-domain — TO BE COMPLETED] if you suspect unauthorised access to your account.

12Children

Corgi Chess is not intended for anyone under 18. We do not knowingly collect data from children. If we learn that we hold data belonging to someone under 18, we will suspend the account and delete the personal data we are permitted to delete.

13Changes to this policy

We may update this policy as the service evolves. We will change the effective date above and, where changes are material, notify you in the application or by email before they take effect.

Corgi Chess
Setting up the board